and i think it just depends on how she feels and whether she thinks she has the energy. not just to be president for four years but to go through the campaign that she would have to go through to maybe not get the nomination, maybe get the nomination, but to get elected. those six years that you spend running and then governing, it takes a lot out of even somebody as young as president obama. >> and if you need any reminding of how tough the job is, look no further than barack obama, all the times you have interviewed him from start to finish, his hair has turned white. people are blaming you. >> i don't think that's the case, piers. >> steve, it's been a pleasure talking to you. it was fantastic television just to see those two sitting there, taking questions, and i salute you. well done. >> thank you, piers. >> guns are squarely at the top of president obama's agenda tonight. 38 days after the tragedy at newtown, he and vice president joe biden met with police chiefs and sheriffs in cities across the country including utah, aurora, colorado, and oak creek, wisconsin. j